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-rw-r--r--ace/Process_Mutex.h136
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diff --git a/ace/Process_Mutex.h b/ace/Process_Mutex.h
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-/* -*- C++ -*- */
-
-//=============================================================================
-/**
- * @file Process_Mutex.h
- *
- * $Id$
- *
- * A wrapper for mutexes that can be used across processes on
- * the same host machine, as well as within a process, of
- * course.
- *
- *
- * @author Doug Schmidt
- */
-//=============================================================================
-
-
-#ifndef ACE_PROCESS_MUTEX_H
-#define ACE_PROCESS_MUTEX_H
-#include "ace/pre.h"
-
-#include "ace/config-all.h"
-
-#if !defined (ACE_LACKS_PRAGMA_ONCE)
-# pragma once
-#endif /* ACE_LACKS_PRAGMA_ONCE */
-
-#if !(defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM) || defined (ACE_PSOS))
-#include "ace/SV_Semaphore_Complex.h"
-#else
-#include "ace/Synch.h"
-#endif /* !(ACE_WIN32 || ACE_HAS_POSIX_SEM || ACE_PSOS) */
-
-/**
- * @class ACE_Process_Mutex
- *
- * @brief A wrapper for mutexes that can be used across processes on
- * the same host machine, as well as within a process, of
- * course.
- */
-class ACE_Export ACE_Process_Mutex
-{
-public:
- /// Create a Process_Mutex, passing in the optional <name>.
- ACE_Process_Mutex (const char *name = 0,
- void *arg = 0);
-
-#if defined (ACE_HAS_WCHAR)
- /// Create a Process_Mutex, passing in the optional <name>. (wchar_t version)
- ACE_Process_Mutex (const wchar_t *name,
- void *arg = 0);
-#endif /* ACE_HAS_WCHAR */
-
- ~ACE_Process_Mutex (void);
-
- /**
- * Explicitly destroy the mutex. Note that only one thread should
- * call this method since it doesn't protect against race
- * conditions.
- */
- int remove (void);
-
- /// Acquire lock ownership (wait on queue if necessary).
- int acquire (void);
-
- /**
- * Conditionally acquire lock (i.e., don't wait on queue). Returns
- * -1 on failure. If we "failed" because someone else already had
- * the lock, <errno> is set to <EBUSY>.
- */
- int tryacquire (void);
-
- /// Release lock and unblock a thread at head of queue.
- int release (void);
-
- /// Acquire lock ownership (wait on queue if necessary).
- int acquire_read (void);
-
- /// Acquire lock ownership (wait on queue if necessary).
- int acquire_write (void);
-
- /**
- * Conditionally acquire a lock (i.e., won't block). Returns -1 on
- * failure. If we "failed" because someone else already had the
- * lock, <errno> is set to <EBUSY>.
- */
- int tryacquire_read (void);
-
- /**
- * Conditionally acquire a lock (i.e., won't block). Returns -1 on
- * failure. If we "failed" because someone else already had the
- * lock, <errno> is set to <EBUSY>.
- */
- int tryacquire_write (void);
-
- /**
- * This is only here for consistency with the other synchronization
- * APIs and usability with Lock adapters. Assumes the caller already has
- * acquired the mutex and returns 0 in all cases.
- */
- int tryacquire_write_upgrade (void);
-
-#if defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM) || defined (ACE_PSOS)
- /// Return the underlying mutex.
- const ACE_mutex_t &lock (void) const;
-#endif /* ACE_WIN32 || ACE_HAS_POSIX_SEM || ACE_PSOS */
-
- /// Dump the state of an object.
- void dump (void) const;
-
- /// Declare the dynamic allocation hooks.
- ACE_ALLOC_HOOK_DECLARE;
-
-private:
-#if defined (ACE_WIN32) || defined (ACE_HAS_POSIX_SEM) || defined (ACE_PSOS)
- ACE_Mutex lock_;
-#else
- /// If the user does not provide a name we generate a unique name in
- /// this buffer.
- ACE_TCHAR name_[ACE_UNIQUE_NAME_LEN];
-
- /// Create and return the unique name.
- const ACE_TCHAR *unique_name (void);
-
- /// We need this to get the right semantics...
- ACE_SV_Semaphore_Complex lock_;
-#endif /* ACE_WIN32 || ACE_HAS_POSIX_SEM || ACE_PSOS */
-};
-
-#if defined (__ACE_INLINE__)
-#include "ace/Process_Mutex.inl"
-#endif /* __ACE_INLINE__ */
-
-#include "ace/post.h"
-#endif /* ACE_PROCESS_MUTEX_H */